Interpretation:
The remaining amount of 25.0g sample needs to be calculated.
Concept introduction:
The time period that is needed for one-half of a radioisotope’s nuclei to decay into its products is half life.
Answer to Problem 56A
The remaining amount is 4g.
Explanation of Solution
After a given amount of time has elapsed the remaining amount of a radioactive sample is given by the formula is as follows:
Here N is mass of sample,
Given
Put these values in above equation is as follows:
Thus mass of the sample is 4g.
The mass of the sample is 4g which is remaining amount.
Chapter 24 Solutions
Chemistry: Matter and Change
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